baber/WOPTO huggingface dataset:
Patent CA-2197586-C (CA)
Inventor: SATAKE YOSHIKATSU
IPC: C08G75/0254
Filed: 1997-02-14
Granted: 2001-01-02
Abstract: The invention provides a process for producing a poly(arylene sulfide) comprising a dehydration step of heating and dehydrating a mixture containing an organic amide solvent (a), an alkali metal sulfide and water to control a water content in the mixture and a subsequent polymerization step of subjecting the alkali metal sulfide and a dihalo-aromatic compound to a polymerization reaction in the organic amide solvent (a), wherein hydrogen sulfide vaporized off during the dehydration step is absorbed in another organic amide solvent (b) outside a system in which the dehydration step is carried out, thereby recovering it, and the hydrogen sulfide thus recovered is reused in the polymerization reaction as a raw material for the alkali metal sulfide.  The production process of the invention can solve various problems attendant upon the vaporization of hydrogen sulfide and provide a poly(arylene sulfide) which undergoes little variation in melt viscosity and has stable quality.
Patent CA-2198553-C (CA)
Title: Gas diffusion electrodes
Inventor: DENTON JAN
IPC: H01M8/24
Filed: 1997-02-26
Granted: 2008-10-28
Abstract: A gas diffusion electrode comprising a non-woven network of fibres, one or more catalysts components and at least one polymeric substance characterised in that the catalyst is embedded within the fibre network is disclosed.
Patent CA-2201964-C (CA)
Title: Syringe disposal system
Inventor: BEINECKE GREGORY L
IPC: A61L11/00
Filed: 1995-10-05
Granted: 2005-12-06
Abstract: A disposal system for cutting a needle/syringe (22) into small pieces. One or more motor driven rotating cutting blades (6) are located inside of a housing for cutting the needle/syringe (2) into small pieces. The pieces are deposited in a disposal tray (10) filled with a disinfecting solution, with the parts of the needle/syringe (2) automatically separating for recycling due to the specific gravity of the pieces. A pump (16) is provided for pumping the disinfecting solution, preferably a mixture of chlorine bleach and water, to the needle/syringe inlet (8) and cutting area. The disinfecting solution continuously disinfects the inlet (8), the needle/syringe pieces, the cutting blade (6) and the disposal tray (10). An automatic timer keeps the cutting blades (6) rotating and the pump (16) operating for a sufficient time to cut the needle/syringe (2) and disinfect the apparatus. A chute assembly prevents pieces of the disintegrated syringe from flying out of the inlet (8) and provides an auto on/auto off feature.
Patent CA-2205625-C (CA)
Inventor: FLETCHER GLENN R
IPC: B65D27/34
Filed: 1997-05-16
Granted: 2005-12-06
Abstract: A blank for a container and the container afford a structure wherein the adhesive closure for the container also forms a tear strip to allow easy opening of the envelope once it is sealed.
Patent CA-2205893-C (CA)
Inventor: HEDBERG MATS OLOF JOAKIM
IPC: H04L25/06
Filed: 1995-11-09
Granted: 2001-06-26
Abstract: The invention includes a terminating circuit or network (4) which is connected to a signal transmission medium in the form of one or two conductors or lines (2, 3) on which information-carrying signals in the form of voltage pulses can be transmitted, and a impedance-matching circuit (4a) connected to the conductor or conductors. The circuit includes a mean voltage value forming unit which produces a mean voltage value, a control unit which produces adapted reference voltage value, and an impedance-matching transistor which is included in said impedance-matching circuit, wherein said voltage value and said reference voltage value are added together to form a composite control voltage which is applied to the gate-connection of the impedance matching transistor.
Patent CA-2212239-C (CA)
Inventor: APPS WILLIAM P
IPC: B65D77/06
Filed: 1996-02-02
Granted: 2004-11-30
Abstract: A reusable container assembly (10) is provided which comprises a substantially rectangular open-top container particularly adapted to receive a fluid-containing bag. The container is lidded (20) to thereby enclose the contents of the container assembly. A side wall aperture (40) receives the spout of a fluid-containing bag (50) disposed within the container assembly. The container assembly is further made tamper evident.
Patent CA-2216678-C (CA)
Inventor: HOWARD WILLIS E III
IPC: G06K19/06
Filed: 1997-09-29
Granted: 2000-12-12
Abstract: Disclosed is an automated method for reading a test strip for the analysis of one or more analyte in a liquid test sample. The method involves the spectrophotometric reading of a test strip which bears at least two marker fields on its surface which are capable of reflecting light at different spectral regions from each other. The reading means of the spectrophotometer is programmed to discern information concerning the strip, such as what analyte the strip is designed to detect, from the sequences of spectral classifications by spectral reflectancy measurements of the strip's marker fields.
Patent CA-2217976-C (CA)
Title: Image-guided biopsy apparatus with enhanced imaging and methods
Inventor: ZIRING EDO
IPC: A61B34/20
Filed: 1996-04-12
Granted: 2007-06-19
Abstract: Apparatus and methods are provided for positioning a biopsy needle (19) for insertion into a tissue mass by correlating, in real-time, the actual needle position prior to insertion with its probable trajectory once inserted. In a preferred embodiment, the biopsy needle (19) location is tracked electronically and projected over a previously stored or real-time image of the tissue, thus allowing a clinician to observe which features of an imaged tissue the biopsy needle (19) is likely to intersect upon insertion. Continued ultrasound scanning of a selected trajectory may be provided to assess depth of penetration of the biopsy needle (19), when inserted. The apparatus is also provided for expanding the region scanned by an ultrasound transducer (13) beyond the periphery of a compression plate.
Patent CA-2220634-C (CA)
Inventor: LEGENDRE OLIVIER
IPC: B01J23/72
Filed: 1997-03-28
Granted: 2001-02-20
Abstract: PCT No. PCT/FR97/00565 Sec. 371 Date Feb. 13, 1998 Sec. 102(e) Date Feb. 13, 1998 PCT Filed Mar. 28, 1997 PCT Pub. No. WO97/37750 PCT Pub. Date Oct. 16, 1997The invention relates to a process for the direct oxidation of sulphur compounds into elemental sulphur and/or into sulphates at a temperature below 200 DEG  C., in which a supported catalyst whose catalytically active phase comprises copper is used, the copper element being present in a content of at least 2% by weight relative to the catalyst and of at least 15 by weight relative to the sum of the elements of the catalytically active phase. The use of a catalyst of this type ensures a high conversion of the H2S while at the same time minimizing the conversion into SO2.
Patent CA-2226176-C (CA)
Title: Hydrogel patch
Inventor: ABRAHAM WILLIAM
IPC: C12Q1/26
Filed: 1996-07-11
Granted: 2003-09-16
Abstract: A hydrogel patch is disclosed which is comprised of a polymeric material whi ch forms a gel with water with the material being present in an amount of about 0.5 % to 40 % by weight based on the weight of the patch. Electrical conductivity of the water is increased by the addition of an electrolyte. Th e patch comprises an enzyme which is capable of catalyzing a reaction with a biomedically important molecule such as glucose. Glucose drawn into the patc h undergoes a reaction with the aid of the enzyme and the hydrogen peroxide released flows through the electrically conductivity of the water and may react at an electrode surface to generate a signal related to the amount of glucose entering the patch. The patch is also preferably comprised of a buff er which maintains the pH of the patch in the range of from about 3 to 9, and m ay be further comprised of a cross-linking agent, a biocide, a humectant, and a surfactant. The patch is preferably in the form of a thin (5 .mu.m - 50 mils ), flat circular disc (0.5 to 10 cm2 of area) which will conform to the contour s of human skin and may have a non-woven fabric embedded therein and removable release liners on each surface.
Patent CA-2226614-C (CA)
Inventor: WAEBER KENNETH ROBERT
IPC: B65D1/02
Filed: 1998-01-09
Granted: 2006-03-21
Abstract: A thermoplastic bottle comprising an upper portion, a lower portion, and opposite, asymmetric sides joining at a diametric plane and being asymmetric about a center axis of the cylindrical body. The bottle also comprises a plurality of adjacent finger recesses extending about one of the opposite sides in the lower portion of the body; a thumb depression in the lower portion of the other of the opposite sides; and an axially asymmetric circumferential indentation in the cylindrical body between the upper portion and the lower portion to decouple a pressure response of the upper and lower portions and minimize lean transfer to the upper portion resulting from expansion or compression of the lower portion on the one of the opposite, asymmetric sides. The bottle may comprise at least one reinforcing indentation in each of the finger recesses.
Patent CA-2229233-C (CA)
Inventor: SOHAR PAUL
IPC: C07D495/04
Filed: 1996-08-26
Granted: 2003-10-07
Abstract: L'invention concerne un procédé amélioré permettant de réaliser la synthèse d'hxdroxysulfone, lequel est un intermédiaire clef dans la synthèse d'inhibiteurs d'anhydrase carbonique, tout particulièrement de dorzolamide. Les inhibiteurs d'anhydrase carbonique sont connus pour leur efficacité dans le traitement d'une pression intraoculaire élevée ou d'un glaucome.
Patent CA-2233368-C (CA)
Title: Method for preparing a biodegradable filter material
Inventor: LOERCKS JUERGEN
IPC: B29C48/345
Filed: 1996-09-27
Granted: 2000-12-05
Abstract: The invention concerns a biodegradable filter tow or filter material (1) of renewable raw materials for use as tobacco filter elements for cigarettes, cigars or pipes, as well as a process for its manufacture. Fibres, foils or foams produced in an extrusion process and consisting of biopolymers based on thermoplastic starch and their polymer mixture are processed to form the filter tow or filter material according to the invention. The advantages of the invention reside in the use of biodegradability of the natural biopolymer filter material, a pollutant-reducing aroma-enhancing filter effect and an economical manufacturing method.
Patent CA-2241744-C (CA)
Title: Absorbent articles having fluid contact angle gradients and apertured backsheet layer
Inventor: VEGLIO PAOLO
IPC: A61F13/534
Filed: 1996-12-19
Granted: 2003-06-10
Abstract: The present invention relates to a disposable absorbent ar- ticle (1) comprising a liquid pervious topsheet (2), an absorbent core (4), and a backsheet (3). Said backsheet (3) comprises a gas permeable polymeric two-dimensional film having aper- tures, and said core (4) comprising a fluid storage layer, wherein said absorbent article (1) exhibits a fluid contact angle gradient across said storage layer and said backsheet (3).
Patent CA-2250948-C (CA)
Inventor: ODOM RICHARD CHARLES
IPC: G01V5/10
Filed: 1998-10-20
Granted: 2004-01-06
Abstract: A method for inferring the photoelectric absorption of a formation by directly mapping spectroscopic measurements of gamma rays induced in the formation using a fast neutron source. The mapping is accomplished by creating a polynomial function based on counts of gamma-ray events in the gamma-ray energy spectrum; the coefficients of the polynomial function are determined in known calibration environments, and the value of the polynomial is the inferred photoelectric absorption parameter. The spectroscopic measurements are preferably generated by sorting gamma-ray counts of the gamma-ray spectrum into a plurality of energy-dependent channels, and measuring these gamma-ray energy distributions during different portions of the firing cycle where different types of dominant gamma-ray production reactions occur.
Patent CA-2251456-C (CA)
Title: An apparatus for storing and transmitting data
Inventor: YOSHIMOTO MASAKAZU
IPC: H04N7/173
Filed: 1998-10-26
Granted: 2007-02-13
Abstract: This invention relates to an apparatus for storing and transmitting AV data. A receiving buffer unit for storing AV data temporarily, a transmitting buffer unit for storing temporarily the AV data to be transmitted, and a primary storage unit for storing AV data and a secondary storage units for storing AV data are connected to each other by means of a subnetwork. A server control unit for controlling the respective units is connected to the subnetwork. Since these units are connected by means of the subnetwork, any restriction is not given to spaces for installing the units. The capacities of the primary and secondary storage units and the transmitting buffer unit are selected so that they become larger in order of the secondary storage unit, the primary storage unit and the transmitting buffer unit. Thereby, the storage units and the transmitting buffer unit are controlled in a hierarchical form. This makes it possible to construct an AV sever system having large capacity and good responsivity with good cost balance.
Patent CA-2252631-C (CA)
Title: Dispositif uretral de retention d'urine
Inventor: CONWAY ANTHONY J
IPC: A61F5/48
Filed: 1997-04-17
Granted: 2005-11-22
Abstract: L'invention porte sur un appareil servant à obturer au moins une partie des voies urinaires pour empêcher une émission d'urine indésirée comprenant un corps fait d'un élément tubulaire entouré sur sa longueur par une gaine formant une cavité contenant un liquide. Le corps ainsi que l'élément tubulaire et la gaine sont élastiquement déformables entre un état initial de repos ou de relâchement et un état où au moins une partie de la gaine présente un diamètre extérieur égal ou supérieur au diamètre de l'urètre non dilaté. On peut placer dans l'élément tubulaire un stylet servant au guidage, à l'élongation et à la rigidification du corps lors de son introduction dans les voies urinaires. Est également présenté un procédé de réalisation dudit appareil.
Patent CA-2254007-C (CA)
Title: Methods and apparatus for automatically synchronizing and regulating volume in audio component systems
Inventor: LI XU
IPC: H03G5/16
Filed: 1998-11-12
Granted: 2001-02-06
Abstract: A signal regulator regulates an auxiliary signal based upon a primary signal scaled by an external amplifier. The signal regulator receives the primary signal with an unsealed level. Processing circuitry monitors the unsealed level of the primary signal. The primary signal is then output to the external amplifier for scaling, either by amplification or attenuation. The primary signal with a scaled level is in turn received by the signal regulator from the amplifier. The processing circuitry monitors the scaled level of the primary signal from the amplifier, and then generates a gain factor based upon the unsealed level and the scaled level of the primary signal. An auxiliary signal is received by the signal regulator. Adjusting circuitry receives the gain factor from the processing circuitry and adjusts a level of the auxiliary signal based upon the gain factor. The auxiliary signal with the adjusted level is then provided to an external component, for example, a loudspeaker. The signal regulator is particularly useful in regulating the volume of auxiliary audio channels in a surround-sound system based upon the volume of the main or front channels amplified by an audio/video receiver. The signal regulator performs system delay measurements, phase synchronization of the unsealed and scaled primary signals, volume tracking, and consecutive cross-correlation measurements to safe guard against erroneous volume adjustment.
Patent CA-2255953-C (CA)
Inventor: JOHNSON DUANE R
IPC: B60T15/18
Filed: 1997-05-21
Granted: 2004-10-05
Abstract: A pilot operated relay valve (10) for an air pressure braking system includes a relay piston (16) which is responsive to the pressure at a control port (20) to open the valve (10) so that its inlet port (38) is in free communication with its outlet port (24). The relay piston ( 16) includes a balance orifice (26) which permits the outlet port (24) to communicate with the control port (20) to equalize or balance the pressure differential therebetween. A shut off valve arrangement (80, 82) or a check value (90 or 92) is provided to shut off or control flow through the balance orifice during rapid release modulation of the pressure signal for braking applied to the control port (20).
Patent CA-2257410-C (CA)
Title: Method and device for testing differential protection relays or differential protection relay systems
Inventor: GRUNERT HAGEN
IPC: H02H7/045
Filed: 1998-03-06
Granted: 2009-01-27
Abstract: The invention relates to a method and device for testing differential protection relays or differential protection relay systems.  The operating means to be protected by the differential protection relay or differential protection relay system are simulated with all their most important parameters by means of a test device. The test currents calculated in the simulation, in accordance with the means to be protected and other parameters, are sent to the differential protection relay or relay system which is connected to the testing device, so that the operating and error performances of the differential protection relay or relay system can be detected by means of the testing current applied, and can be evaluated in accordance with the specified tolerance data of the differential protection relay or differential protection relay system.
Patent CA-2262174-C (CA)
Title: Bruleur ameliore produisant moins d'oxydes d'azote et de monoxyde de carbone
Inventor: LANNES ERIC M
IPC: F24H9/18
Filed: 1999-02-18
Granted: 2007-08-14
Abstract: Le brûleur à gaz de la présente invention comprend un corps de brûleur raccordé à un couvercle de brûleur. Un ensemble de ports de gaz dans une disposition essentiellement circulaire et planaire sont interposés entre le corps et le couvercle raccordés et sont orientés radialement à partir du corps et du couvercle. Un élément déflecteur coupe-vent est co-formé au corps du brûleur ou au couvercle du brûleur et se prolonge radialement à partir de ces derniers. Un ensemble de partitions de flamme équivalentes en nombre aux ports de gaz se prolongent radialement de l'élément déflecteur coupe-vent selon un alignement essentiellement radial avec les ports de gaz. Chaque partition de flamme comporte deux jupes fixées qui sont essentiellement perpendiculaires l'une à l'autre quand la partition de flamme est observée en coupe transversale.
Patent CA-2262361-C (CA)
Title: Method and apparatus for tailored distortion of a signal prior to amplification
Inventor: VANNUCCI GIOVANNI
IPC: H04J3/00
Filed: 1999-02-23
Granted: 2002-05-28
Abstract: In order to minimize the adverse effects of RF signal nonlinearities during amplification, especially the deleterious effects of signal clipping which may cause uncontrolled out-of-band emissions known as "spectral regrowth", the specification relates to a device and a method for intentionally distorting a radio frequency (RF) signal in a "tailored manner", prior to the amplification of the RF signal. The device monitors the amplitude of a RF signal at the inlet of a "tailored" distorter. A  modifying signal waveform is generated whenever the amplitude of the monitored RF signal is greater than a threshold value. The RF signal is delayed to account for signal processing time associated with the generation of the modifying signal waveform. The generated modifying signal waveform is then summed with the delayed RF signal, thereby forming an intentionally distorted version of the original RF signal. The distorted signal is conveyed to a RF signal amplifier for amplification. The modifying waveform is chosen so as to reduce the amplitude of the RF signal peak to a value that does not exceed the clipping threshold. Furthermore, the modifying waveform is chosen ("tailored") to be less harmful than the effects of the clipping distortion it replaces. The modifying waveform may be completely in-band, out-of-band, or have components of each, depending upon the specific implementation and the desired power spectrum. The process is compatible with current predistortion techniques and may used in conjunction with, or in lieu, of signal predistortion.
Patent CA-2265556-C (CA)
Title: Procede et appareil permettant d'enrouler et de former des bobines de champ pour des machines dynamo-electriques
Inventor: CZEGLEDI KAROLY M
IPC: H02K15/085
Filed: 1997-09-09
Granted: 2004-11-02
Abstract: Procédé d'enroulement de stators comportant des encoches hélicoïdales et appareil permettant de mettre en oeuvre le procédé. Ce procédé consiste à positionner un stator (108) dans une machine d'enroulement de stator dans laquelle une broche à bobiner (18) comporte une ouverture de sortie pour le fil (110). Le fil est introduit dans la sortie pour le fil radialement vers l'extérieur pour être placé sur le stator alors que simultanément la broche à bobiner est mise en mouvement par rotation et mouvement de va-et-vient pour diriger le fil dans les encoches (112) et autour des extrémités des dents (114) du stator. Le fil est alimenté à une allure prédéterminée par un mécanisme d'alimentation (78) qui est situé en amont de la broche à bobiner et monté pour se déplacer en même temps que cette dernière. L'allure à laquelle le fil est fourni peut être modifiée en fonction de la position de la broche à bobiner dans un cycle d'enroulement et de la position désirée pour placer le fil dans le stator.
Patent CA-2274798-C (CA)
Title: Treillis textile pour renforcer des couches liees par du bitume
Inventor: VON FRANSECKY ULRICH
IPC: E01C11/16
Filed: 1997-12-05
Granted: 2005-11-01
Abstract: L'invention concerne un treillis textile à larges mailles pour renforcer des couches liées par du bitume, notamment des revêtements routiers. Ce treillis est revêtu d'un adhésif présentant une affinité pour le bitume et est constitué essentiellement de deux ensembles de fils (1, 2) porteurs parallèles. L'un des ensembles de fils (1) s'étend dans le sens longitudinal du treillis et l'autre ensemble de fils (2) s'étend perpendiculairement au sens longitudinal du treillis, et les fils (1, 2) sont constitués de fibres de verre ou de fibres synthétiques telles que des fibres polymères ou des fibres de polycondensation. Dans le but de mettre au point un treillis d'armature destiné à des couches liées par du bitume, qui adhère mieux que les treillis connus à une plate-forme de chaussée préparée et qui ne forme pas de séparation gênante entre les couches, les fils (1, 2) entrecroisés sont cousus selon un procédé Rachel sur un non-tissé (3) fin, les fils de liage Rachel (5) entourant les fils longitudinaux (1) du treillis et assujettissant les fils transversaux (2).
Patent CA-2277506-C (CA)
Title: Light screening composition containing a polysiloxane type uv-b screening agent and a benzimidazol type uv-b screening agent
Inventor: GONZENBACH HANS ULRICH
IPC: A61K8/89
Filed: 1999-07-12
Granted: 2010-12-07
Abstract: The invention relates to a cosmetic light screening composition containing in an aqueous phase about 0.5 to 10 wt% of 2-phenylbenzimidazol-sulphonic acid or a salt thereof and at least one fatty phase, comprising about 1 to 30 wt% of a linear or cyclic polysiloxane compound of the general formula Ia or Ib,   wherein X signifies R or A;   A signifies a group of the formula IIa, lIb and/or Ilc;       R signifies hydrogen, C1-6 alkyl or phenyl; R1 and R2 each independently signify hydrogen, hydroxy, C1-6-alkyl or C1-6-alkoxy;  R3 signifies C1-6-alkyl;   R4 signifies hydrogen or C1-6-alkyl;   R5 and R6 each independently signify hydrogen or C1-6-alkyl;  r has a value of from 0 to 250; s has a value of from 0 to 20;  r +s has a value of at least 3; t has a value of from 0 to 10; v has a value of from 1 to 10; and v+t has a value of at least 3; n has a value from 1 to 6; with the proviso that in the case that s is 0 at least one X is A.